Calculating machine



oct. 6, 1931.

R. H. sTRorHER CALCULATING MACHINE original Filed Aug'. 21, 1922 2ASheets-Sheet 1 Oct. 6, 1931.

R. H. STROTHEl-l CALCULATING MACHINE Original Filed Aug. 21., 1922 2Sheets-Sheet 2 Patented Oct. 6, 193i UNITED STATES' AParr-:rrr oFFiicEROBERT H. STROTHEB, OF MONTCLAIR, NEW JERSEY, ASSIGNOR I'.lO REMINGTONAC- COUNTING MACHINE CORPORATION, NEW YORK, Y., A CORPORATION OF NEWYORK CALCULATIN G MACHINE Y Original application led August 2l, 1922,Serial No. 583,391. Divided and this application filed July 30, y v1925. serial No. 47,132.

This invention relates to calculating machines. The invention has forone of its principal objects to provide improved register mechanism andespecially improved transfer mechanism which operates equally Well foraddition and for Subtraction.`

The invention also has minor objects which will appear in the course ofthe description.

To the above and other ends the invention consists in certain featuresof construction and combinations and arrangements of parts all of whichwill be fully set forth herein and particularly pointed out in theclaims. The principal features of the invention are of such sort thatthey can be embodied in forms differing considerably from each other andonly one such form has been shown. This application is a. division of myprior application for Letters Patent for calculating machines, filedAugust 21, 1922, Serial -No. 583,391, patented November 5, 1929, No.1,734,538. l

That patent discloses a complete computing and recording machine, thepresent application being confined to the registering or totalizingmechanism and being more especially directed to the transfer mechanism.In the accompanying drawings only so much of the complete machine isshown as is necessary to a disclosure of the registering andtransferring mechanism.

Figure l is a longitudinal section through one of the totalizers,together with fragmentary views of some of the associated parts.

Figure 2 is a section taken about on the line 2-2 of Figure 1 andlooking toward the rear.

Figure 3 is a fragmentaryifront View of the extreme left-hand part ofone of the totalizers and associated mechanism.

Figure 4 is a longitudinal section looking toward the left and showingin side view the mechanism shown in the front view in Figure 3.

Figure 5 is a view somewhat similar to` Figure l but showing theregister depressed into engagement with the rack and some of themechanism in a position it occupies at a point in the operation of theoperating mechanism.

Fig. 6 is a fragmentary right-hand side elevation, partly in sections.

In the said parent application Sr. No. 583,- 391, there is sliownlacalculating and recording machine which in most respects is identicalwith that shown in the reissue patent to Sundstrand, No. 14,237,reissued December 26, 1916, but some of the 'Sandstrand mechbars 63 anda lower pair of horizontal frame bars 64. The present drawings show onlya little more of the framework which will be referred to at theappropriate place in the description. l

The totalizers are situated in this forwardly projecting part of theframe between the two frame bars 63 and between the two frame bars 64.

Said totalizei's are controlledby a series of differentially movabledenominational rack bars 65 which extend from the front of the machinehorizontally nearly to the back thereof. The se barsV are supported forlongitudinal movement in any suitable way, the means here shownconsisting of cross rods 66 eachA supported at its ends in certain lugsor brackets projecting up from the base, and said rods passing throughlongitudinal slots 68 in said racks. The latter may be spaced apart onthe rod 66 by suitable washers. The rack 65 may be reciprocated front`and back by any suitable means, such means being found in nearly alladding machines having denominational racks. In the parent case theSundstrand machine is shown provided with its usual digit keys which by81 and 82.

bars are shown connected with the bars in such a manner as that theupward motion of said type bars causes forward motion of bars 65, anddownward motion of the type bars causes rearward motion of the bars 65,each to an extent measured in teeth of the rack appropriate to the digitto be added or subtracted by said rack.

The totalizer or registering mechanism is shown in Figs. 1 and 2 innormal position and in Fig. 5 in operating position. The detailconstruction of each totalizer can be varied considerably within thescope of the invention. As here shown the frame of each totalizercomprises a left-hand end plate 81, a right-hand end plate 82 and crossbars 83 here shown as square bars each fastened at its ends to the frameplates by screws 84; but the uppermost one of the three frame bars shownhas the heads of its screws 85, Fig. 3, made of a special shape, eachterminating in a pin lying in a slot 87 in the inner face of a frame-bar 63. These 4pins guide the upper part of the totalizer as it movesup and down between its operating position shown in Fig. 5 and itsnormal position shown in the other figures. The totalizer is preferablycovered with a casing plate at front, top and back, with a suitablesightopening for the dials, but the plate is not shown in the drawings.

Each of the numeral wheels comprises a dial or drum 88, a )inion 90rigid with said drinn on the rightrand side thereof and a transfer disk91 having a tooth 92 on the left-hand side of said drum. These numeralwheels or dials are strung-along a shaft or rod 93 secured at its endsin the frame plates The totalizers shown in the drawings are arrangedfor decimal notation and the pinions 90 therefore have each ten teeth.Said pinions mesh continuously with intermediate gear wheels 94 andthese in turn mesh with idler gears 95, the latter, together withcertain other devices, being strung along and journaled on a-cross shaft96 mounted at its ends in the frame plates 81 and 82. When the totalizeris depressed to its working position shown in Fig. 5, the gears 95 meshwith the racks 65 and when the totalizer is moved to its normal positionthe racks and gealsare disconnected. Each of the intermediate gears 94is separately movable bodily in its plane in order to transfer. To thisend each of said gears is individually journaled on a stud 97 projectingleftward from one of a series of plates 98, said plates 98 beingl eachpivoted on the rod 93 between two of the numeral wheels, with freedom toswing a short distance front and back. These plates 98 may be guided inany suitable way but as here shown each of them at its lower part hasprojecting wings 100, which are adapted to slide through suitable slotswhich are eut for the purpose in two of the frame bars 83. Each of saidplates is made with an opening 101 through which the shaft 96 passes,said opening being made merely for clearance as the plates in the formhere shown have no connection with said shaft.

The swinging motion of each plate or hanger 98 is controlled by meansincluding a slot or notch 102 into which a stud 103 projects leftwardfrom a sector 104. There is a set of said sectors pivoted on the shaft96 interspersed between the several idler wheels 95; but the extremeright-hand hanger 98 is stationary to which end it may be fastened byany suitable means to one of the franle bars 83. In the present instancethe hangers 98 are swung front or back to transfer by springs as willpresently appear and their motion is controlled by transfer dogs 105pivoted on a shaft 106 supported at its end in the end plates 81 and 82.Each of these dogs is in the general form of a bell crank having ahorizontal arm extending forward just above the sector 104 and avertical arm extending behind a transferdisk 91, where it is providedwith a tooth 99 adapted to bc deflected by the tooth 92 when the wheelturns in either direction through the space between 9 and (l. Each dogis pressed toward the wheel by -a light spring 109. The horizontal armof each dog 105 has a tooth 107 adapted to enter two notches 108 and 110in the upper edge of the sector 104. rlhe motion of said sector in bothdirections is limited by prolonging the rear wall of the notch 108 andthe front `wall of the notcn 110 radially so that even when the dog isin its elevated position shown for example in Fig. 1, it is stillengaged by one of these prolongations notwithstanding it is lifted outof the notch. In Figs. 1 and 5 a hanger 98 is shown in its rear positioncontrolled by the notch 108 in the sector 101 but it will be seen thatwith the dog elevated as shown in Fig. 1 said sector can be swung untilthe notch 110 is under the tooth 107 and that such swinging inotionwould swing the hanger 98 forward a short distance through the pin 10?)and notch 102.

The sectors 104` are actuated by means of a series of gear sectors 111each having a hub pivoted on a shaft 112. which shaft lies beneath therack bal's 65, the sectors 111 coming up between said rack bars. 'Iheshaft or rod 112 is rigidly mounted in the forward ends of two arms 113fixed to a rock sha i' t 114, which rock shaft is journaled at its endsin the frame bars 64. The shaft or rod 112 has a hub or collar 115pivoted thereon near each end thereof. TheA frame plates 81 and 82extend downward and each of theln has therein a notch that fits over thecorresponding collar 115, which collar is grooved as indicated in Fig.2. The construction is such that any totalizer can be set on to themachine by placing it in position from the top and pushing down thetotalizer until the said notches come into suitable engagement with thehubs 115, meanwhile also guiding the pins or screwhead's 85 into theslots 87. ln order to secure the, totalizer in place each of the hubs115 has fixed thereto a hand operate-d latch 117. These latches extendupward, each terminating at its upper end in a handle and each having ahook or shoulder adapted to hook over one of the screw heads 85, whichscrew heads may be annularly grooved for the purpose. There is one ofthese latches on each side of the totalizer and bymo-ving them towardthe lfront of the machinea-ny totalizer may be almost instantly removedby the operator and another put in its place.

The rock shaft 114 above described may have near one or both endsthereof an arm 120 connected by a strong tension spring 121 with a pin122 on the frame bar 64, this spring or these springs serving normallyto hold the totalizer 'in its elevated or non-working position. It willbe seen that the vshaft 112 moves up and down with the totalizer so thatthe sectors 104 and 111 are always in engagement when the totalizer ison the machine but they separate when a totalizer is removed from themachine, the sectors 104 being built into the totalizcrand the sectors111 heilig built into the non-detachable part of the machine.

Each of the sectors 111 has .projecting downward therefrom an arm 128,each of said arms at its lower end being bent otlI to the right to forman ear 124. Around the hub' of each sector a spring 125 'is coiled, thetwo ends of the spring projecting downward and entering notches in thefront and back sides respectively of the ear 124. This spring is undertension to cause the two branches thereof tovapproach each. other, butthey are normally held apart by being pinched against thc ear 124. Saidsprings project beyond the ears 124 and cach of them straddles a crossrod 126 forming part of a bail having als'o end arms 127,`Fig. 2, said:arms being pivoted onv the shaft or rod 112.

The mechanism of the totalizer includes any suitable means for lockingthe dial wheels 88 against rotation' at certain times. 'In the presentinstance this takes the form of a plate or bar 128 of sheet metalpivoted in the end plates 81 and 82 by means of hubs 130 and pressedtoward the register wheels by a spring 131. This plate has a series offingers each at its free end bent to yform a tooth to engage between twoof the teeth of a pinion 90.

The .register also includes a bail bar 132 having arms 133, Figs. 1 and4, the bar 132 lying beneath the ends of the dogs 105 which are.prolonged forward for the purpose. The

arms 133 are pivoted on the rod 106.

The general principle of operation of the the position shown in Fig. 1with the register wheels out of mesh with the racks 65, the

vdial wheels locked by the bar 128, the dogs consisting of thekey-mechanism of the Sandstrand machine. By the use of a key to bepresently described the totalizer is next moved down to bring its wheelsinto engagement with the racks 65. The downward motion of the totalizerfirst causes the bail 132 to be dropped'down from the position shown inFig. 1 to that shown-in Fig. 5, allowing the dogs 105 to swing to theiroperative positions with their teeth 107 engaging the notches 108 andwith their teeth 99 in position to be .deflected on occasion by theteeth 92 of the dial wheels; and afterward the bar 128 is caused to belifted to unlock the pinions 90. The handle is then pulled which firstcauses the totalizer to be locked in its depressed position and the bail126 is then swung toward the rear as shown in Fig. 5, which forces therear branch of each spring 125 rearward: The forward branch cannotfollow it because of its engagement with the ear 124, the sectors 104and 111 being preof a number of its teeth corresponding to theI digit toloe registered in that denomination. The racks 65 turn the registerwheels 95, 94 and 90 to correspond with the several digits. In case oneof the dial wheelspasses from 0 to 9 it operates the dog 105 whichreleases the sector 104 and allows that particular sector to be operatedby its spring 125, the ear 124 moving rearward to the rear branch of thespring 125, and bringing the notch 110 into position to be engaged bythe tooth 107, which will-occur immediately because the tooth 92 doesnot stop under the tooth 99; When the sector 104 swings in the mannerdescribed, its pin 103 swings the hanger 98 forward, moving the axis 97of the wheel 94 one-half space toward the front of the machine. At thistime the wheel 95 is under control of the rack 65, but the wheel 90 isfree to turn. If the wheel 95 is standing still at the moment, the lowerside of the wheel 94 which engages said wheel 95 will pivot on saidwheel 95 and the opposite or upper side of said wheel 94 will be moved afull tooth 'space turning the dial pinion 90 one space. A similar thingwill happen if the wheel 95 is in motion at the time, the action beingthat the pinion 90 will receive CII one tooth more of motion than itwould if the hanger had not moved the aXis of the wheel 94 forward. thetransfer takes place whenever a dog 105 is tripped irrespective ofwhether or not the register is at the time beingdigit'ally operated bythe rack 65 in the denomination to which the transfer takes place. Atthe end of the operation the racks 65 or some of them will have beenmoved different distances toward the front of the machine, depending onthe number subtracted and some perhaps of the' hangers 98 will have beenswung forward to transfer and others will not. end of the forward strokeof the handle the totalizer is released andis moved to its upperposition shown in Fig. 1 by its spring or springs 121. This motionresults in first depressing the bar 128 to lock all of the dial wheelsagainst rotation in either direction and an instant later the bail 132lifts all of ,the dogs 105 out of engagement with their 107 but such ofthem as have not already done A so will immediately snap to thatposition driven by their springs 125 on account of the bail 126 being inits rear position. At the end of the forward stroke of the handletherefore. this particular totalizer will be substantially as shown inFig. 1, except that the bail 120 will be in its rear position, all ofthe sectors 104 will be in position where the notches 110 are inregister with teeth 107, and the hangers 98 will be in their forwardpositions.

In case any wheel has not received an increment of motion by transferand its sector 104 has been swung idly after the termination of thesubtracting operation, the effect of such idle swinging will be to movethe axis 97 of the gear 94 one-half space toward the front of themachine. At this time, however, it .is the pinion 9() that is undercontrol and the gear 95 is free. At this time, therefore, thel upperside of the gear 94 will pivot on the pinion 90 and its lower side willmove one tooth toward the front of the machine, turning the pinion 95one tooth in coumer-clockwise direction.

In the case. of a totalizer that was not depi-essed before the handlewas pulled but remained in its upper or nondvorking position during theforward pull of the handle, its bail 120 would also have been swungtoward the rear, carrying all of the sectors 111 with it, and swingingall of the sectors 104 to their positions alternative to the ones shownin Fig. 1. This is true because all of said sectors 104 are free, thedogs 105 being elevated. It will thus be seen that at the end of theforward stroke ofthe handle all of the totalizeis are in their elevatedpositions with the dial wheels locked, and

It will thus be seen that At the with the transfer mechanism in theposition alternative to that shown in Fig. 1.

In order to add a number on any desired register said register isdepressed into engagement with the racks G5 at the beginning of thereturn stroke of the handle. In this instance as before the act ofdepressing the totalizer automatically causes the bail 132 to swingdownward and all of the transfer dogs 105 to drop into their operativepositions, their teeth 107 engaging the notches 110; after which the bar128'is elevated to unlock the dial wheels. The very first operation ofthe return stroke of the handle is, by means to be hereinafterdescribed, to depress the totalizer and hold it in its depressedposition. The next is to swing the bail bars 126 back to their forwardposition shown in Fig. 1. In this operation the forward branches of thesprings 125 will be operated by said bail bars, but the rear brancheswill be unable to follow on account of the engagement of the dogs 105.The next step in the operation is to retilrii the racks 65, thus turningthe register wheels in the opposite direction to that in which they wereturned in the process of-subtraction. The transfer meehaiiisiu operatesin exactly the saine way as in subtraction except that it operates inthe opposite direction. At the end of the return stroke of the handlethe totalizer is released and is elevated by its spring 121. This upwardmotion first depiesses the bar 128 to lock the dial wheels and thenoperates the bail 132 to lift the dogs 105 out of engagement with thesectors 104. If any one of said sectors had been operated to transfer,it and its co-operatiug sector 111, would already have been inoved toposition shown in Fig. 1. Those sectois that were not operated bytransfer will move to that position as soon as the bail 132 lifts thedogs 105 out of engagement. The parts will then have been restored tothe Fig. 1 position, ready for the addition or subtraction of anotherninnber. In case there are several totalizers distributed along theracks 65, it will be seen that any desired number can be added orsubtracted in any one of said totalizers ory in any combination of saidtotalizers. It may if desired be added in one totalizer and subtractedin another.

The principle of the transfer mechanism seems to merit a littlediscussion. Consideration of the mechanism will show that whereas thepresent embodiment of it includes three gears 90, 94 and 95 in eachdenomination, tlie gear 94 is the essential one. In the present instancethe gear 95 is little more than a convenient means of communieating themotion of the rack 65 to the gear 94. The turning of the wheel iscontrolled by the rack 65 and the wheel 95 may be considered a part ofsuch controlling means. The pinion 90 is merely a means to communicatethe motion of the' wheel 94 to a" numbered dial wheel. Many calculatingmachines have merely the register wheels with'- out dial wheels and ifsaid dials are not desired the operation would not be modified by theiromission in the present instance. In the present construction said dialwheels perform mechanically two functions, namely, they c arr the teeth92' which operate the transfer ogs and they are directly engaged by thelocking bar 128; butit is obvious that theoretically 'said locking barcould engage the upper side of the wheel 94 directly and said wheelcould itself carry the transfer- 1'5' tooth 92. In that event the ear 94must of posite or upper side ofisaid wheel 94 is thereafter locked orheld by the bar 128 acting in the present instance through the pinion90.

motion if the gear 95l was stationar at the The gear 94 is tliereafterfreed from thecontrol of the ear- 95. This could of course be done b liting said gear 94 out of enga ement wit 'said gear 95, b ut it is donein t e present instance by freeing the gear 95 itself from the controlof the rack 65. After the] upper side ofthe gear 94 is Ilocked or heldan thelower side is freed the axis is returned to its originalposition.` When the a'xis was originally shifted to transfer it impartedto the upper side of the wheel a units time, or an incrementof one unito motion in case the gear'95 wasturning at the time. After the gear 94is locked at 1ts upper side and freed at its lower side and when theaxis is restored to its original position, a units motionisimpa'rtedtothe lower tooth ofthe wheel so that at the end of the operation thewheel, bodily considered, is in its ori inal position, but rotatablyconsidered ithas een turned to the extent of one tooth. As far as thegeneral principle of this transfer is concerned it is of courseimmaterial by what means or what details of mechanism the axis of thegear 94 is given the peculiar motions described.

The means for controllincf thel motion of the totalizers into and out o?operative position can be of any suitable sort, neans for this generalpurpose being wellknown in the art. That shown in the drawing is showndesigned to co-operate with the mechanism of the Sundstrand machine.`The left-hand frame bar 64 has a stationary bar 135 secured b thereto bymeans 'of depending brackets 136.

On suitable studs 137 projecting from said bar there are mounted groovedguide rollers 138 ada ted to guide a bar 140 for sliding motion nectedwith the operating mechanism that it moves rearward on the forwardstroke of the operating handle and frontward on the le turn stroke ofsaid handle, the 'levera e being so designed that the excursion of saibar 140 is about equal to the front and back spacing from one totalizerof the series to-the next.

Mounted against the inside face of the lefthand frame plate 81 of eachtotalizer is a totalizer connectinfr key 150 projecting above thetotalizer and 'formed with any suitable finger piece."i The stem of thiskey has a sl'ot 151 through which the shaft 93 extends and another slot152 through which the shaft 96 passes, the construction bein such thatthe key has a -limited extent o up and down movement. At its. lower endsaid key is pivoted at 153 to a bell crank 154 pivoted to the sideplate'81, on a stud 155 and controlled by a spring 156 which normallyholds the key 150 in its upper position. At its free forward end thelever 154 has a pin or stu'd 157l proj ect-- ing therefrom into a slot158 in-l a vertical` sliding piece V160 which 'piece also has guideslots 161 through which pass headed pins 162 riveted into vthe sideplate 81. The construction is such that this slide 160 is normally heldby the pin 157 in its Aupper position but when `the key 150 is depressedsaid slide can drop down although it is notforced down by the key. Thelower end of the slide 160 projects below the totalizer in a positionwhere it is guided in one direction by the fixed bar 135 and in a frontand back direction by two studs 163 projecting. from said bar. At itslower end the slide 160'has projecting to the right therefrom a lug 164which when the slide 1160l is depressed is adapted to be engaged by rontand back. This bar vis so `conone. of ya series of'horlzontal flanges165 on the left-hand face of the bar 140. These flanges 'are all inalignment but there is between the adjacent ends of two consecutiveflanges .tnopening in a position toallow the lug 164 to drop downbetween them'. The operator pushes down, onfthe key 150 until the.latter has moved as far as it ,can go with respectto the totalizer atwhich time. the lu 164 will not have been ldepressed far enoug tobelcaught by the fiange. 165 but if the o erating handle is worked with theparts 1n that position said lug vwill ride on the top i of one of saidflanges. In case it is desired to subtract a number thev operator doesnot stop when the key has reached the bfottomof its stroke with relationto the totalizer but forces it on down so as to carry the totalizer withit; in other words, pushes'it down as faras it will go and while holdingdown begins to pull Vthe handle. As soo`n as the handle begins to movethe flange'165 moves rearward over the lug 164 as shown in Fig.l 5,thereby locking the totalizer in its depressed position until the handlereaches theend of its forward'stroke. At this time the end of thatparticular flange 165 will have reached the lug 164 and the totalizerwill be released and will be thrown up by its spring 121 and the ke-y150 will be restored to its normal position by the spring 156.

Addition is accomplished on the return stroke of the handlevand can beaccomplished by pulling the handle forward and depressing the totalizerin the saine manner as above described while the handle is held in, itsforward position and holding the totalizer down until the handle startson its return motion. For reasons that will hereinafter appear, however,it is preferred to cause addition automatically by merely imparting tothe key 150 a downward stroke equal to its motion relative to thetotalizer before pulling the handle in the first place, means beingprovided to h old the key in its depressed posi- I tion until the handlehas reached the forward end of its stroke and for drawing the totalizerdown automatically at the very first part of thereturn stroke of thehandle.

The bell crank 154, which is connected with the key 150, has a dependingarm projecting leftward from the lower end of which is a triangular lug166 which normally occupies the position shown 1n Fig. 4 where 1tengages the front forward under side or face of a tri 'angulailug 167which projects toward the right from an arm 168 pivoted at 170 to an earof the stationary bar .135. Beneath and to the rear of the lug 167 saidbar 135 has a square Vnotch or cut-out 171. -The lower corner of thetriangular lug 167 is just a little to the rear of the forward wall ofsaid slot 171. The construction is such that when the key 150 isdepressed the first effect of its motion is to swing the lug 166 towardthe rear which cams up the arm 168 until said lug 166 passes the lug167, when the latter drops down in front of the lug 166 and prevents itsreturn to normal position, thus locking the key 150 in its depressedposition. 1f the parts be left in this position during the forwardstroke of the handle the rearward motion of a flange 165 will engage thelug 164, which is made on an incline downward and backward as shown inFig. 4, and cam upward the slide 16() so that said lug will ride on theupper surface of the fiange. At the end of the forward stroke of thehandle said flange will run from under the lug and allow the latter todrop down in front of it. On

i the return stroke of the handle and of the bar 140 the inclinedforward end of the flange 165 will engage the inclined lug 164 and willf immediately pull the totalizcr down to its depressed position fromwhich it will escape at the end of the return stroke of the handle. Thenthe totalizer is thus pulled down the lug 166 will descend into thenotch 171 as shown in Fig. 5, and when the totalizer is released theupper corner of said triangular lug will engage under the lower cornerof the lug 167, raising said lug and the arm 168 until-*said lug 166reaches its upper position when, escaping from the notch 171, it is freeto swing to the. left under the pressure of the spring 156, restoringthe parts to normal position shown in Fig. 4. It will of course heunderstood that any other suitable means can be. provided for causingthe totalizer to go through these motions. lt will also be understoodthat in the case of subtraction the lugs 166 and 167 and the notch 171co-operate in the saine way as in the case of addition except that insubtraction there is no use made of' the locking function of said lug,the lug 166 proceeding immediately down into the notch 171. It may alsobe remarked that in case one of the keys 150 has been depressed andlocked down and it is desired to release it without operating themachine this can be done by simply pushing it down as far as it will go,carryingir the totalizer with it and then releasing it. The extra motionwill depress the lug 166 out of control of the lug 167 and unlock thekey. It will also be understood that the mechanism above described isrepeated in the case of each totalizer.

It has been stated in the description of the principle of theregistering mechanism that in the course of the downward movement of thetotalizer the first efi'ect is to allow the bail 132 to drop downwardand the dogs 105 tov lock the transfer sectors. and that subsequentlythe plate 128 is lifted out of engagement with the pinions 9() to unlockthe latter and that the reverse operation occurs in the reverse order onthe upward movement of the totalizer. In order to accomplish thesefunctions the shaft or rod 112 is fixedly mounted in the ends of thearms 113 and just inside or to the right of the lever 154. said shaft112 has an upstanding arm 172 fastened thereon as for example by a pin173. This arm is forked at its upper end and a pin 174 proiects in thesaid fork from a lever 175 of the first order. said lever being pivotedon the shaft 96. Above said shaft said lever 175 has a pin or stud 176projecting therefrom and acting cam fashion on an inclined part",177 ofthe left-hand arm 133 of the bail 132. It is this pin acting on the highpart of the incline 177 that normally holds the bail 132 in its elevatedposition. When the totalizer moves down and up the arm 172, consideredwith relation to the stationary framework` swings about the shaft 114 asa center; but considered with reference to the totalizer it swings aboutthe shaft 112 as a center and Vanti-clockwise on the down stroke of thetotalizer and clockwise on the upstroke. The incline 177 is so designedthat the bail 132 begins to move downward in the totalizer the instantthe totalizer itself begins to move downwardfso that the dogs 105 almostimmediately engage the sectors 104, and are disengaged from them thelast thing in the upward motion of the totalizer. The bail 132 is givenan excess of motion over that necessary to control the dogs as indicatedin Fig.` 5 where the totalizer is shown in its depressed -position. loThe upper end of the lever 175 cooperates ward from the-pivot piece 130of the plate 128.A The part of said arm 17 8 that is show n inengagement with lever 175 in Fig. 4 is concentric with the shaft 96 butnear the end of said arm there isa nose 180 which is engaged by thelever 175 at the end of the stroke of the latter, such engagementlifting .the plate 128 by the last part of the depresslon of thetotalizer and after the transfer sectors .zo have been locked. Onthevupstroke of the totalizer this plate almost immediately drops intolocking position and before the bail 132 lifts the dogs' 105.

The means for swinging the bails 126 to control the springs 125 of thetransfer mechanism can be varied considerably, and in fact any mechanismwill answer that will give the described motions to these bails. Asshown, two bars 210 extend horizontally frontand back beneath themechanism above described, and are guided for front and rearlongitudinal motion by means including arms 211 r1sing from a rock shaft212 pivoted to lugs 213 of the base fralne. Each bar 210 is notched at214, the notches embracing the rods 126 and being of a depth adapted toallow of the vertical motion of said rods. In the parent case the bars210 are shown actuated by the operating handle, being moved rearward inthe forward stroke of said handle, and moved forward at thecorresponding pai-tof the return stroke of said handle. i A

The drawings showa key 215, a. bail 220, and certain bars 228, 231 and233; but these are used in the taking of totals and are parts of theinvention 'claimed in the parent case.

When a totalizer standing 'in the normal machine by loosening thelatches 117 and lifting the totalizer out, the lever 175 is relievedfrom the control of the forked arm 172, Fig. 4, with the result that thepin 176 thereof is cammed rearward by the incline cam fashion with anarm 178 projecting rear' the early part but not in the very first partofV position shown in Fig. 4 is removed from the 177 because the bail132 is under the pressure l.

lshown in Fig. 4. As the totalizer descends 76 Iinto place the pin 174occupies a positiona little to the left of that shown in Fig. 4. Theleft-hand fork 2 46 is-prolonged and formed with an inclined edge sothat as the pin 174 descends it will be cammed over to itsproper` 80position. When replacing a totalivier the key 150 must be depressed andthe totalizer pushed clear down and released in order to bring lug 166first down `behind and then up in front of the lug 167. 485

Where in the claims I refer to the axis of a register wheel Abeing movedone-half space to transfer,I mean that said axis is moved one-half asfar as a tooth of the wheel would be moved for 'that purpose if the axisof the 9 wheel were stationary.

if What I claim as new and desire to secure by Letters Patent is t- 1.In a. calculating machine, the combination of a pair of register gearwheels, a gear for driving the gear wheel of higher denominationdifferentially in one direction for addition and in the oppositedirection for subtraction, spring means for moying on occasion t-he axisof said higher gear wheel onehalf space to transfer, means for causingsaid spring means to act on saidv axis in one direction for addition andin the opposite direction for subtraction, a Adetentfor resisting theaction of said spring mea-nsyand means whereby the lower register wheeltrips the detent of the higher register wheel.

2.- In a calculating machine, the combination of a totalizer comprisinga pair of denominational register wheels, Ya denominational rack fordriving the wheel of higher' denomination difl'erentially. means formoving said totalizer to bring said wheel into and out of gear with saidrack, means for moving on occasion the axis of said higher registerwheel one-half space to transfer while said wheel is in gear with saidrack, means for holding said wheel while out of gear with said rack. andmeans for restoring said axis when said wheel is out of gear with saidrack.

3. In a calculating machine, 'the combination of a totalizer including apair of register wheels, a'denominational reciprocatory rack for drivingthe register wheel, of higher denomination, means for moving saidtotalizer to bring said register wheel into and out of gear with saidrack, transfer mechanism including a spring for moving on occasion theaxis of said higher wheel one-half space, means for controlling theaction of said Cri spring, and means for putting said spring undertension in one direction when said rack is moving in one direction and4for putting said spring under tension'in the opposite di.- rection whenthe motion of said rack is reversed.

4. In a calculating machine, the. combination of a pair ot registerwheels, a rack tor the wheel oi` higher order. means for moving saidrack and register wheel into and out of gear, means for moving said ruckdifferentially hack and forth, and transfer mechanism im cludiug adevice tor imparting to said higher register wheel on occasion anincrement of motion to transfer, a dctent for controlling said device,spring means tor operating said device, and means acting at eachoperation of the machine to put said spring means under tension in onedirection priorl to the motion ot' said rack in oney direction and toput said spring means under tension in the opposite direction prior tothe motion of said rack in the opposite direction.

` 5. In a calculating machine, the combination oi a pair of registerwheels. means for actuating said register wheels in one direction i'oraddition and in the opposite direction for subtraction, a transferdevice, spring means tor operating said transfer device, a reciprocatingdevice which when in one position places said spring means under tensionin one direction and when in its other position places said springsunder tension in the other direction. and means acting automatically tomovesaid device to one of its positions prior to an adding operation andto the other of its positions prior to a subtracting operation.

6. In a calculating machine, the combination ot a pair of registerwheels, a rack for the said register wheel of higher denomination` meansfor moving said rack differentially back and forth, means for movingsaid higher register Wheel into gear with said rack prior to one of themotions of said rack for addition and prior to the opposite motion ofsaid rack for subtraction, and transfer mechanism including a transferdevice, spring means for operating said device, and means acting at eachoperation of the machine to pnt said spring means under tension in onedirection prior to an adding operation and in thel other direction priorto a subtracting operation.

7. In a calculatng machine, the combination of a totalizer includingregister wheels, racks for operating said Wheels, and means for movingsaid totalizer to bring said register wheels into and out of gear withsaid racks, and transfer mechanism, s aid transfer mechanism including awheel in said totalizer individually movable on occasion in its ownplane to transfer, spring means for moving said wheel to transfer asrecited, a detent for normally holding said wheel against such motion,means for releasing said detent when the wheel of next lower orderpasses the transfer point, means tor releasing said detent when saidregister wheels are out of gear with said racks, and means for re,-storiug said wheel while said register wheels are. out of gear.

8. In a calculating machine, the combination with actuating mechanismaml a detachable totalizcr, ot transfer devio'es in said totalizer, andindividual means in said actie ator for opera-ting each of lsaidtransfer dcvices b v power other than that derived from the totalizerwheels, said transfer devices and their operating means being separatedwhen the totalizcr is detached from the machine.

9. In a calculating machine, the combination with actuating mechanismincluding denominational racks and denominational transfer operatingdevices, of a totalizer including register wheels controlled by saidracks and transfer devices operated by said transfer operating devices,and means for moving said totalizcr and said transfer operating` devicestogether whereby said register wheels move into and out of engagementwith said racks but said transfer devices rcmain in engagement with saidtransfer operating devices.

1t). In a calculating machine, the combination of a totalizer includingrregister wheels and transfer devices, an actuator including registerwheel operating devices and spring operated means for actuating saidtransfer devices, and means for moving said totalizcr and said springoperated lneans whereby said register Wheels are moved into and out ofgear with their actuating devices but said transfer devices remain inengagement with their actuating devices.

11. In a calculating machine, the combination of a totalizcr includingregister wheels and transferI sectors, an actuator including 'drivingmeans for said register wheels and sectors for operating said transfersectors, and means for moving said totalizer and said transfer operatingsectors together so as to bring said register wheels into and out ofgear with their actuating devices but to retain said transfer' sectorscontinuously in gear with their actuating sectors.

12. In a calculating machine, the combination of a totalizer includingregister wheels and transfer sectors, an actuator including drivingmeans for said register wheels and sectors for operating said transfersectors, and means for moving said totalizer and said transfer operatingsectors together so as to bring said register wheels into and out ofgear with their actuating devices but to retain nsaid transfer' 'sectorscontinuously in gear with their actuating sectors, said totalizer beingdetachable from said actuating mechanism.

' 13. In a calculating machine, the combination of a totalizer includingregister wheels and transfer sectors, an actuator including drivingmeans for said register wheels and sectors for operating said transfersectors, and means for moving said totalizer and said transfer operatingsectors together so asto bring said register wheels into and out of gearwith their actuatingdevices but to retain said transfer sectorscontinuously in gear with their actuating sectors, said totalizer beingdetachable from said actuating meehanism, and means for locking saidtransfer sectors when said totalizer is detached.

14. In a calculating machine, the combination of a totalizer includingregister wheels and transfer sectors, an actuator including drivingmeans for said register wheels and sectors for` operating said transfersectors, and means for moving said totalizer and said transfer operatingsectors together so as to bring said register Wheels into and out ofgear with their actuating devices l but to retain said transfer sectorscontinuously in gear with their actuating sectors, said totalizer beingdetachable from said actuating mechanism, and means for automaticallylocking said transfer sectors when the totalizer is detached from themachine and for automatically unlocking said sectors when the totalizeris replaced in the machine.

15. In a calculating machine, the combination with a totalizer includingregister Wheels and transfer devices, and actuating mechanism includingregister Wheel operating means, of a swinging frame for moving saidtotalizer to bring its register wheels into and out of gear with theiractuating means, an arm on said frame, and means controlled by said armfor locking said register wheels and said transfer devices.

16. In a calculating machine, the combination of a detachable totalizerincluding register .wheels and transfer mechanism including transferdogs, actuating mechanism including means for actuating said registerwheels and means for actuating said transfer devices, a swinging framein the actuating mechanism for moving said totalizer to bring itsregister Wheels into and out of gear with their actuating devices, andmeans controlled by said swinging frame for locking and unlocking saidregister Wheels and for moving said transfer dogs to and from operativeposition, said means when the totalizer is detached froln the machineautomatically causing said locking means to lock said regv oted devices,a bail extending between the branches of each of said springs, andmeans` for swinging said bail first in one direction and afterwards'inthe opposite direction.

18. In a calculating machine, the combination with a plurality oftotalizers each including register wheels, of transfer mechanismincluding a plurality of set-s of pivoted devices, springs for swingingsaid pivoted devices in both directions, means associated with eachtotalizer for putting said springs under tension first in one directionand then in the othei', and an operating dcvice cominon to all of saidtensioning means.

19. In a calculating machine, the combination with a totalizer includingtransfer de-A vices and springs for driving said transfer mechanism inboth directions, of operating mechanism including an oscillatory shaft,an arm on said shaft, two links operated b v said arm, a bar fortensioning said spring in first onel direction and then in the otherdirection,

means operated by one of said links for moving said `bar in an earlypart of the oscillation of said shaft inone direction, and meansoperated by the other of said links for moving said har in the oppositedirection in an early pa-rt of the return stroke ofisaid shaft.

20. In a calculating machine, the combination with a totalizer includingtransfer mechanism having springs that operate in both directions, ofoperating mechanism including a device movable to one position totension said springs in one direction and to another position to tensionsaid springs in the opposite direction, a to-and-fro moving part, meanswhereby said part early in its forward stroke moves said device in onedirection and early in its return stroke moves said device in theopposite direction, and pawls for holding said device in each of its twopositions, said pawls being released by said to-and-fro moving part.

21. In a calculating machine including actuating mechanism, a totalizerhaving dial wheels mounted on a fixed axis, a gear 94, an individualsupport for said gear 94, said support movable parallel to the plane ofits gear, a sector 104 for controlling the motion of said support, saidsector having two notches 108 and 110, a transfer dog for cngagin-g saidnotches to control said sector, and means for operating said sector.

22. In a calculating machine, the combination with register wheelactuating devices, of a totalizer including a series of Wheels 94 drivenby said actuating devices, individual supports for said wheels 94 eachmovable parallel to the plane of its wheel, means for moving saidsupports as recited, means whereby the motion of one of said supports iscontrolled by the registering mechanism of the next lower order totransfer during a calculating operation, and means operated after thecompletion of a calculating operation to move all of those supports thathad not been moved in transferring operation.

23. In a calculating machine, the combination with actuating devices, ofa totalizer including a series of gear wheels 94, individual supportsfor said gear wheels each movable parallel to the plane of its wheel,means for so moving said supports, dogs for controlling the motion ofsaid supports for transferring, a bail 132 for moving all of said dogsto inoperative position, and means for operating said bail to move thedogs to operative position prior to a calculation, and for operatingsaid bail to move the dogs to inoperative position after a calculation.

24. In a calculating machine, the combination with a totalizer includingregister wheels, of transfer mechanism including a set of pivoteddevices, springs for swinging said pivoted devices in both directions,and an operating device for putting said springs under tension first inone direction and then in 'the other at each complete operation of themachine. A

Signed at the borough of Manhattan, city of New York, in the county ofNew York and State of Neur York, this 23d' day of July, A. D. 1925. I

ROBERT H. STROTHER.

